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xen/blkfront: cleanup stale persistent grants
authorJuergen Gross <[email protected]>
Mon, 13 Aug 2018 14:01:11 +0000 (16:01 +0200)
committerKonrad Rzeszutek Wilk <[email protected]>
Mon, 27 Aug 2018 16:12:03 +0000 (12:12 -0400)
commita46b53672b2c2e3770b38a4abf90d16364d2584b
tree0ce7ddd134914342f4144623afc89d0526a1a852tree | snapshot
parent973e5405f2f67ddbb2bf07b3ffc71908a37fea8ecommit | diff
xen/blkfront: cleanup stale persistent grants

Add a periodic cleanup function to remove old persistent grants which
are no longer in use on the backend side. This avoids starvation in
case there are lots of persistent grants for a device which no longer
is involved in I/O business.

Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Roger Pau Monné <[email protected]>
Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
drivers/block/xen-blkfront.c diff | blob | blame | history
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